"Bethenny was Bethenny," a second insider revealed. "She was very direct with everyone. She wasn't afraid to speak her mind."

Bethenny Frankel and Kim Richards on a previous episode of "Bethenny." (Brad Barket/Getty Images for "bethenny")

Even though she been longtime friends with the Richards sisters, Frankel is known to throw shade their way.

The cast of "Real Housewives of Beverly Hills." (Michael Larsen/Bravo)

In April, during an appearance on "Watch What Happens Live" she told host Andy Cohen that fame is partly to blame for their troubles.

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They're in a town where money and attention and fame are really prevalent, and I think it's like an alternative universe," she said. "They're living this, but then they're also living it in the press, on Instagram, on Twitter. It's a really really murky, and I don't know how they're going to get out of it. Being on television together… it doesn't seem like it's going in a good direction."